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Finding the Fourth Proportional to 318,611.86, 477,917.19 and 94,129.98

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Solution

The fourth proportional to 318,611.86, 477,917.19 and 94,129.98 is: 141,194.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,611.86 : 477,917.19 = 94,129.98 : x
  2. Step 2: Convert to fraction form
    318,611.86/477,917.19 = 94,129.98/x
  3. Step 3: Cross multiply
    318,611.86x = 477,917.19 × 94,129.98
  4. Step 4: Simplify right side
    318,611.86x = 44,986,335,536.36
  5. Step 5: Solve for x
    x = 44,986,335,536.36/318,611.86
  6. Step 6: Final answer
    x = 141,194.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.